1. Social Equity and Health Section, Centre for Addictions and Mental Health, University of Toronto, Canada
2. University of Maryland, Baltimore County
3. Bloomberg School of Public Health, Department of Population & Family Health Sciences, Johns Hopkins University
4. School of Social Work, University of North Carolina, Chapel Hill
5. Bloomberg School of Public Health, Department of Policy and Health Management
6. Unitat de Salut Laboral, Universitat Pompeu fabra